Concrete rail-tie.



A. S. DUNKLE & G. E. HARNER. CONCRETE RAIL TIE.

APPLICATION FILED MAR.14,1914.

1 1 1 5,41 6. Patented 001127, 1914.

2 SHEETS-fSHEET 1.

l U H A. S. DUNKLE & G. E. HARNER.

CONCRETE RAIL TIE.

APPLICATION FILED MAR.14,1914

5 Patented 0013.27, 1914.

2 SHEETS-SHEET 2.

HOLTWQOD, PENNSYLVANIA.

Application filed Mal-ca 14., 191 1 Serial No. seam:

To all whom itmay concern:

Beit ,known that. we, (1) An'rH UR S.

" DUNKLE and (2;)- GEORGE E. 'HARNEn,'citizens of the'United- States,residing at (1) Baltimore, State of Maryland, and (2) Holtwood in thecounty of Lancaster and State of Pennsylvania, have invented certain newand useful Improvements in Concrete RailTies; and we do hereby declarethe following to be a full, clear, and exactdescription of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to concrete rail ties, and one of the principalobjects of the invention is, to provide reinforced concrete tie which.will yieldto the action of the rolling'stoch as it passes over therails, and

- which will be provided with expansion bolts for securing the baseifianges of the rails in. place upon: the .tie, and which will be providedwith a wooden core to absorb the shock. and at the same time to renderthe passing of the rolling stock over the rails practically noiseless.

Another object of vide a concrete rail tie which can be quickly laid andthe rails can be readily assembled, and in which thehollow tie isprovided with reinforcements extendinglengthwise of the tie. andprovided with a wooden core which will absorb shocks and act as aquietus.

These and other objects may be attained by means ofthe constructionillustrated in the accompanying drawings, in which,

Figure 1 is a side elevation of a concrete tie made in accordance withthis invention the rails being. shown in section, :13 2 1s a top planiew' of one end of the tie talren on the line22 of Fig. 1, Fig. 3 is adetail sectional view taken on the line 33 of Fig. 2,

Fig. 4'. is avertical' sectional View taken on the'line 1et of Fig. 1,Fig. 5 is a similar section taken on the line-5 5 of Fig. 1, Fig. 6 is ahorizontal sectional view 1. the end portion. of the tie taken on theline (S-- 3 of Fig. 1, and Fig. 7 is a plan view of the variousreinforcing wires used to give strength to'the-tie. said wires beingembedded within the concrete during the manufacture of the tie,

Referring to the drawing, the numeral 1 designates the main body portionof the concretcI-tie, and embedded within the concrete at the'time thesame is molded into the form ooncnn'rn nair rrn.

specification of Letters Eatent.

"noise of the the invention is to pro.

Patented oet. 2"z;fie i4. l...

of a tie are the reinforced rods 2 near the bottom of the tie, saidreinforcedods eachhav ng a hook 3 at itsi'opposit'een ds," i n inclinedportion a. Tl hereinforcingfirc s o are also embedded withintlieconcretei said rods being provided with 'inwardly bent ends- 6, andthe inclined portions-4- converge at the ends of: the tie and thehooks-'8 engage the ends 6 of the reinforcing ro'ds?.5, "as shown moreclearly in Fig. 6.

Extending longitudinally of --th'e tie is a flaring recess 7, and placedwithin the recess ,7 is a wooden core 8, said core being placedinpos'ition after the tie has be'en nroldeug and said core serving togive resiliency and absorb shocks and also to serve to'deaden therolling stock "passing ver the rails. 1 The top oi cover portion ofthe,provided with a tapering rib l'Onvhich ex tends throughout thelen'gthand breadth-of the recess 7. Reinforcingnieinbers' I 11 extendthrough the riblO and at'their' ends said reinforcing rods 11 areprovided with inclined portions 12 and converging so portions 13 whichterminate in books Lat. The reinforcing rods 15 extendthrough the .upperportion of the tie andsaid rods are provided with curved ends 16 andoutwardly extending hooks 17 at their ends.

Formed integral with the upper portion 9 of the tie are the railengaging members 18, and the hooks 1 1 and 17 of the reinforcements 15and 11 are connected within the members 18 by a cross bar a and areembedded during the molding of the tie. The member 18 is provided with arecess 19 which conforms to the contour of the base flange 26 of therail :21, and a metal flange engaging element 22 is secured to the tieand overlaps the base flange of the rail as shown in Fig.- 1. The metal.flange engaging element 22 is secured to the tie by means of anexpansion bolt comprising. a slit tube 523 and a bolt 2-1- engaging theinterior screw threads of said tube or sleeve.

A centrally disposed expansion bolt 25 comorises a similar slit sleeveor tube and a bolt 26 engaging the interior screw threads thereof. Aspiral spring n7 surrounds the shank of the bolt26 and bears at one endagainst the under side of the wrench engaging head of the bolt, whilethe opposite end of the spring bears against the upper end of the slitsleeve 25.

From the foregoing it will be obvious that a rail tie made in accordancewith this invention will be very strong and durable, will outlast woodenties many times over, will slightly yield to the weight of the rollingstock, and will be practically noiseless in' members one of which isprovlded with a flaring recess, and the other with a taper- .ing rib tofit said recess, reinforcing rods extending lengthwise and crosswiseof'the tie.

2. A concrete rail tie. comprising two members one of which is providedwith a tapering recess extending longitudinal thereof, and the othermember being provided with a rib to ,fit said recess, a wooden coreloosely placed in the bottom of said recess and reinforcing rodsextending longitudinally of the two members of the tie, said reinforcingrods having inclined and converging ends provided with hooks to engagetheinwardly extending members of the other reinforcing rod, and said twomembers of the tie being connected together by expansion bolts.

3. A concrete' rail tie comprising two members having an intermediate,wooden core, and reinforcing rods extending lengthwise of said tie, anintegral engaging element for the base flange of a rail, and a metal lugfor engaging "the'oppo'site flange of the rail, said lug being securedto the tie by an expansion bolt. i

4. A concrete tie comprising two longitudinal sections, one of which isprovided with a flaring recess andthe other with a rib to fit saidrecess, an intermediate wooden core adapted to absorb the noises of therolling stock, and to serve as a base for said tie,

reinforcing rods extending through both sections of the tie, said rodshaving terminal hooks and inwardly bent ends, interlocked in theconcrete, lugs at the ends of'the tie for en.gaging the; base flanges ofthejrail,

metal engaging elements for the. inner flanges of the rails, expansionboltsifoi holding said elements in place and a centrally disposedexpansion, bolt 'extending through both members of the :tie and throughthe woodencore.-

In testimony whereof we afiix our signatures inpresence of twowitnesses. v

ARTHUR spnnmrnn. GEORGE E. Witnesses; 4 l

JOHN VV'. ARMSTRONG, I E'rrm' ARMSTRONG.

